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Wolf1's Avatar
 
Join Date: Jan 2003
Location: Idaho Falls, ID
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So, do Porsche guys know Bimmers?

Just curious, the Bimmer forum looked a little slow so hey, I'll ask you guys!!!

A 1994 325i came in today on a hook, no start (obviously).
Pulled all 6 coil packs verified good spark at each.
Pulled the plugs,(soaked in fuel) so obviously has fuel..
Compression checked low (about 90-100) figured to fuel in cyls.
Installed new plugs, cranks and no start, smell fuel.
Remove fuel pump fuse, Vrooom fires up....dies (no fuel).
Install fuse, hoping its cleared out now...no start again.
Remove fuse and Vrooom...

Obviously its grossly overfueling. Didn't have time for any more testing.

Will check fuel pressure, coolant sensor, etc... in the morn.

So I guess my question is: Sound familiar?

Maybe somebody can save me some test time, with their Bimmer experience...

Thanks...
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Old 02-03-2004, 06:53 PM
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Was is continuously injecting? That leads to a over rich condition.
If the fuel pressure is ok and it is injecting all the time I would pull out the ECU and see if it's full of water. If it is, call Systems Consulting and get it rebuilt.
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Old 02-03-2004, 07:05 PM
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I've heard of this happenning on another e36, how long did the car run for w/the fuse pulled? Also, did it come in for "just died" or what?
Ahmet
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Old 02-03-2004, 07:27 PM
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Continuously injecting: not sure, I'm guessing you mean injectors staying open.
This is one of those "Diagnose and Call" jobs. So I am trying to limit the diagnostic time.
I will check the pressure and ecu, and hook the amp probe on the injectors, see if I can "catch" anything.

Thanks....
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75 914 - Undecided.
80 931 - Gone, but not forgotten.
72 914 - old toy- sold.
And a whole bunch of German scrap metal shaped like 924's.


Old enough to know better, and stupid enough to do it anyway!
Old 02-03-2004, 07:28 PM
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Quote:
Originally posted by 1.2gees
I've heard of this happenning on another e36, how long did the car run for w/the fuse pulled? Also, did it come in for "just died" or what?
Ahmet
Car runs for a few seconds with fuse pulled.
Came in for,"cranks, but no start". Thats all it says on the RO.
I did not talk to the customer, so thats all I have to work with.
The customer is from out of state, so we have no history on the car.....
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75 914 - Undecided.
80 931 - Gone, but not forgotten.
72 914 - old toy- sold.
And a whole bunch of German scrap metal shaped like 924's.


Old enough to know better, and stupid enough to do it anyway!
Old 02-03-2004, 07:30 PM
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I would suspect FPR. Coolant temp sensor alone can't keep the car from starting, not by being over fueled anyway.
Ahmet
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Old 02-03-2004, 08:47 PM
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*Fix Post*......The fuel pressure checked ok, injector pulse width ok, still over rich and no start. Decided to go back to the low compression, soaked cylinders with Motor-vac solution to remove carbon and hopefully free up the rings. Started engine with fuse removed, and had helper insert fuse while running, vehicle kept running... Cleaned the injectors, intake and throttle body with Motor vac machine. Test drove for about 10-15 miles to clear out all remaining solution, ran great. Allowed to sit overnight to recheck cold start problem. Checked compression on one hole before starting 130 psi!..... Vehicle started as normal.........happy customer!!!!!
The end..
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75 914 - Undecided.
80 931 - Gone, but not forgotten.
72 914 - old toy- sold.
And a whole bunch of German scrap metal shaped like 924's.


Old enough to know better, and stupid enough to do it anyway!
Old 02-06-2004, 05:37 AM
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Touchy little car.....

I need a Motor Vac Machine...
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Old 02-06-2004, 08:32 AM
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I always thought it would be spelled "beemer."
But then again, I've never seen it in writing and never had occasion to write it.
Huh!
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1989 Porsche 944, 1973 VW Beetle - gone but not forgotten
Old 02-06-2004, 08:53 AM
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"beemer" is the motorcycle, "bimmer" is the car...
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Old 02-06-2004, 01:53 PM
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